<header id="header">
    <div id="banner"></div>
    <div id="header-outer" class="outer">
        <div id="header-inner" class="inner">
            <nav id="main-nav">
                <a class="main-nav-link" href="/post/">首页</a>
                <a class="main-nav-link" href="#">归档</a>
                <a class="main-nav-link" href="#" target="_blank">关于</a>
            </nav>
            <div class="d1">
                <form method="get" action="/search/">
                    <input type="text" name="q" placeholder="搜索">
                </form>
            </div>
        </div>
    </div>
</header>